Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 1 | /* Copyright 2008 The Android Open Source Project |
| 2 | */ |
| 3 | |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 4 | #include <inttypes.h> |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
Elliott Hughes | 824e30e | 2015-01-29 22:32:32 -0800 | [diff] [blame] | 7 | #include <string.h> |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 8 | #include <errno.h> |
| 9 | #include <unistd.h> |
| 10 | #include <fcntl.h> |
| 11 | #include <sys/mman.h> |
| 12 | |
| 13 | #include "binder.h" |
| 14 | |
| 15 | #define MAX_BIO_SIZE (1 << 30) |
| 16 | |
| 17 | #define TRACE 0 |
| 18 | |
| 19 | #define LOG_TAG "Binder" |
| 20 | #include <cutils/log.h> |
| 21 | |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 22 | void bio_init_from_txn(struct binder_io *io, struct binder_transaction_data *txn); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 23 | |
| 24 | #if TRACE |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 25 | void hexdump(void *_data, size_t len) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 26 | { |
| 27 | unsigned char *data = _data; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 28 | size_t count; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 29 | |
| 30 | for (count = 0; count < len; count++) { |
| 31 | if ((count & 15) == 0) |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 32 | fprintf(stderr,"%04zu:", count); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 33 | fprintf(stderr," %02x %c", *data, |
| 34 | (*data < 32) || (*data > 126) ? '.' : *data); |
| 35 | data++; |
| 36 | if ((count & 15) == 15) |
| 37 | fprintf(stderr,"\n"); |
| 38 | } |
| 39 | if ((count & 15) != 0) |
| 40 | fprintf(stderr,"\n"); |
| 41 | } |
| 42 | |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 43 | void binder_dump_txn(struct binder_transaction_data *txn) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 44 | { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 45 | struct flat_binder_object *obj; |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 46 | binder_size_t *offs = (binder_size_t *)(uintptr_t)txn->data.ptr.offsets; |
| 47 | size_t count = txn->offsets_size / sizeof(binder_size_t); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 48 | |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 49 | fprintf(stderr," target %016"PRIx64" cookie %016"PRIx64" code %08x flags %08x\n", |
| 50 | (uint64_t)txn->target.ptr, (uint64_t)txn->cookie, txn->code, txn->flags); |
| 51 | fprintf(stderr," pid %8d uid %8d data %"PRIu64" offs %"PRIu64"\n", |
| 52 | txn->sender_pid, txn->sender_euid, (uint64_t)txn->data_size, (uint64_t)txn->offsets_size); |
| 53 | hexdump((void *)(uintptr_t)txn->data.ptr.buffer, txn->data_size); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 54 | while (count--) { |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 55 | obj = (struct flat_binder_object *) (((char*)(uintptr_t)txn->data.ptr.buffer) + *offs++); |
| 56 | fprintf(stderr," - type %08x flags %08x ptr %016"PRIx64" cookie %016"PRIx64"\n", |
| 57 | obj->type, obj->flags, (uint64_t)obj->binder, (uint64_t)obj->cookie); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 58 | } |
| 59 | } |
| 60 | |
| 61 | #define NAME(n) case n: return #n |
| 62 | const char *cmd_name(uint32_t cmd) |
| 63 | { |
| 64 | switch(cmd) { |
| 65 | NAME(BR_NOOP); |
| 66 | NAME(BR_TRANSACTION_COMPLETE); |
| 67 | NAME(BR_INCREFS); |
| 68 | NAME(BR_ACQUIRE); |
| 69 | NAME(BR_RELEASE); |
| 70 | NAME(BR_DECREFS); |
| 71 | NAME(BR_TRANSACTION); |
| 72 | NAME(BR_REPLY); |
| 73 | NAME(BR_FAILED_REPLY); |
| 74 | NAME(BR_DEAD_REPLY); |
| 75 | NAME(BR_DEAD_BINDER); |
| 76 | default: return "???"; |
| 77 | } |
| 78 | } |
| 79 | #else |
| 80 | #define hexdump(a,b) do{} while (0) |
| 81 | #define binder_dump_txn(txn) do{} while (0) |
| 82 | #endif |
| 83 | |
| 84 | #define BIO_F_SHARED 0x01 /* needs to be buffer freed */ |
| 85 | #define BIO_F_OVERFLOW 0x02 /* ran out of space */ |
| 86 | #define BIO_F_IOERROR 0x04 |
| 87 | #define BIO_F_MALLOCED 0x08 /* needs to be free()'d */ |
| 88 | |
| 89 | struct binder_state |
| 90 | { |
| 91 | int fd; |
| 92 | void *mapped; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 93 | size_t mapsize; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 94 | }; |
| 95 | |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 96 | struct binder_state *binder_open(size_t mapsize) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 97 | { |
| 98 | struct binder_state *bs; |
Serban Constantinescu | a44542c | 2014-01-30 15:16:45 +0000 | [diff] [blame] | 99 | struct binder_version vers; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 100 | |
| 101 | bs = malloc(sizeof(*bs)); |
| 102 | if (!bs) { |
| 103 | errno = ENOMEM; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 104 | return NULL; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Nick Kralevich | 0fe7ce3 | 2015-12-23 18:58:05 -0800 | [diff] [blame] | 107 | bs->fd = open("/dev/binder", O_RDWR | O_CLOEXEC); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 108 | if (bs->fd < 0) { |
| 109 | fprintf(stderr,"binder: cannot open device (%s)\n", |
| 110 | strerror(errno)); |
| 111 | goto fail_open; |
| 112 | } |
| 113 | |
Serban Constantinescu | a44542c | 2014-01-30 15:16:45 +0000 | [diff] [blame] | 114 | if ((ioctl(bs->fd, BINDER_VERSION, &vers) == -1) || |
| 115 | (vers.protocol_version != BINDER_CURRENT_PROTOCOL_VERSION)) { |
Serban Constantinescu | 018cf41 | 2014-02-19 15:34:02 +0000 | [diff] [blame] | 116 | fprintf(stderr, |
| 117 | "binder: kernel driver version (%d) differs from user space version (%d)\n", |
| 118 | vers.protocol_version, BINDER_CURRENT_PROTOCOL_VERSION); |
Serban Constantinescu | a44542c | 2014-01-30 15:16:45 +0000 | [diff] [blame] | 119 | goto fail_open; |
| 120 | } |
| 121 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 122 | bs->mapsize = mapsize; |
| 123 | bs->mapped = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, bs->fd, 0); |
| 124 | if (bs->mapped == MAP_FAILED) { |
| 125 | fprintf(stderr,"binder: cannot map device (%s)\n", |
| 126 | strerror(errno)); |
| 127 | goto fail_map; |
| 128 | } |
| 129 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 130 | return bs; |
| 131 | |
| 132 | fail_map: |
| 133 | close(bs->fd); |
| 134 | fail_open: |
| 135 | free(bs); |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 136 | return NULL; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | void binder_close(struct binder_state *bs) |
| 140 | { |
| 141 | munmap(bs->mapped, bs->mapsize); |
| 142 | close(bs->fd); |
| 143 | free(bs); |
| 144 | } |
| 145 | |
| 146 | int binder_become_context_manager(struct binder_state *bs) |
| 147 | { |
| 148 | return ioctl(bs->fd, BINDER_SET_CONTEXT_MGR, 0); |
| 149 | } |
| 150 | |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 151 | int binder_write(struct binder_state *bs, void *data, size_t len) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 152 | { |
| 153 | struct binder_write_read bwr; |
| 154 | int res; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 155 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 156 | bwr.write_size = len; |
| 157 | bwr.write_consumed = 0; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 158 | bwr.write_buffer = (uintptr_t) data; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 159 | bwr.read_size = 0; |
| 160 | bwr.read_consumed = 0; |
| 161 | bwr.read_buffer = 0; |
| 162 | res = ioctl(bs->fd, BINDER_WRITE_READ, &bwr); |
| 163 | if (res < 0) { |
| 164 | fprintf(stderr,"binder_write: ioctl failed (%s)\n", |
| 165 | strerror(errno)); |
| 166 | } |
| 167 | return res; |
| 168 | } |
| 169 | |
dcashman | 51f592c | 2016-03-11 10:38:10 -0800 | [diff] [blame] | 170 | void binder_free_buffer(struct binder_state *bs, |
| 171 | binder_uintptr_t buffer_to_free) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 172 | { |
| 173 | struct { |
| 174 | uint32_t cmd_free; |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 175 | binder_uintptr_t buffer; |
dcashman | 51f592c | 2016-03-11 10:38:10 -0800 | [diff] [blame] | 176 | } __attribute__((packed)) data; |
| 177 | data.cmd_free = BC_FREE_BUFFER; |
| 178 | data.buffer = buffer_to_free; |
| 179 | binder_write(bs, &data, sizeof(data)); |
| 180 | } |
| 181 | |
| 182 | void binder_send_reply(struct binder_state *bs, |
| 183 | struct binder_io *reply, |
Mark Salyzyn | 52aa4a7 | 2016-05-25 13:14:10 -0700 | [diff] [blame] | 184 | binder_uintptr_t buffer_to_free, |
dcashman | 51f592c | 2016-03-11 10:38:10 -0800 | [diff] [blame] | 185 | int status) |
| 186 | { |
| 187 | struct { |
Mark Salyzyn | 52aa4a7 | 2016-05-25 13:14:10 -0700 | [diff] [blame] | 188 | uint32_t cmd_free; |
| 189 | binder_uintptr_t buffer; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 190 | uint32_t cmd_reply; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 191 | struct binder_transaction_data txn; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 192 | } __attribute__((packed)) data; |
| 193 | |
Mark Salyzyn | 52aa4a7 | 2016-05-25 13:14:10 -0700 | [diff] [blame] | 194 | data.cmd_free = BC_FREE_BUFFER; |
| 195 | data.buffer = buffer_to_free; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 196 | data.cmd_reply = BC_REPLY; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 197 | data.txn.target.ptr = 0; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 198 | data.txn.cookie = 0; |
| 199 | data.txn.code = 0; |
| 200 | if (status) { |
| 201 | data.txn.flags = TF_STATUS_CODE; |
| 202 | data.txn.data_size = sizeof(int); |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 203 | data.txn.offsets_size = 0; |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 204 | data.txn.data.ptr.buffer = (uintptr_t)&status; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 205 | data.txn.data.ptr.offsets = 0; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 206 | } else { |
| 207 | data.txn.flags = 0; |
| 208 | data.txn.data_size = reply->data - reply->data0; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 209 | data.txn.offsets_size = ((char*) reply->offs) - ((char*) reply->offs0); |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 210 | data.txn.data.ptr.buffer = (uintptr_t)reply->data0; |
| 211 | data.txn.data.ptr.offsets = (uintptr_t)reply->offs0; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 212 | } |
| 213 | binder_write(bs, &data, sizeof(data)); |
| 214 | } |
| 215 | |
| 216 | int binder_parse(struct binder_state *bs, struct binder_io *bio, |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 217 | uintptr_t ptr, size_t size, binder_handler func) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 218 | { |
| 219 | int r = 1; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 220 | uintptr_t end = ptr + (uintptr_t) size; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 221 | |
| 222 | while (ptr < end) { |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 223 | uint32_t cmd = *(uint32_t *) ptr; |
| 224 | ptr += sizeof(uint32_t); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 225 | #if TRACE |
| 226 | fprintf(stderr,"%s:\n", cmd_name(cmd)); |
| 227 | #endif |
| 228 | switch(cmd) { |
| 229 | case BR_NOOP: |
| 230 | break; |
| 231 | case BR_TRANSACTION_COMPLETE: |
| 232 | break; |
| 233 | case BR_INCREFS: |
| 234 | case BR_ACQUIRE: |
| 235 | case BR_RELEASE: |
| 236 | case BR_DECREFS: |
| 237 | #if TRACE |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 238 | fprintf(stderr," %p, %p\n", (void *)ptr, (void *)(ptr + sizeof(void *))); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 239 | #endif |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 240 | ptr += sizeof(struct binder_ptr_cookie); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 241 | break; |
| 242 | case BR_TRANSACTION: { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 243 | struct binder_transaction_data *txn = (struct binder_transaction_data *) ptr; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 244 | if ((end - ptr) < sizeof(*txn)) { |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 245 | ALOGE("parse: txn too small!\n"); |
| 246 | return -1; |
| 247 | } |
| 248 | binder_dump_txn(txn); |
| 249 | if (func) { |
| 250 | unsigned rdata[256/4]; |
| 251 | struct binder_io msg; |
| 252 | struct binder_io reply; |
| 253 | int res; |
| 254 | |
| 255 | bio_init(&reply, rdata, sizeof(rdata), 4); |
| 256 | bio_init_from_txn(&msg, txn); |
| 257 | res = func(bs, txn, &msg, &reply); |
Mark Salyzyn | 52aa4a7 | 2016-05-25 13:14:10 -0700 | [diff] [blame] | 258 | if (txn->flags & TF_ONE_WAY) { |
| 259 | binder_free_buffer(bs, txn->data.ptr.buffer); |
| 260 | } else { |
| 261 | binder_send_reply(bs, &reply, txn->data.ptr.buffer, res); |
| 262 | } |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 263 | } |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 264 | ptr += sizeof(*txn); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 265 | break; |
| 266 | } |
| 267 | case BR_REPLY: { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 268 | struct binder_transaction_data *txn = (struct binder_transaction_data *) ptr; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 269 | if ((end - ptr) < sizeof(*txn)) { |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 270 | ALOGE("parse: reply too small!\n"); |
| 271 | return -1; |
| 272 | } |
| 273 | binder_dump_txn(txn); |
| 274 | if (bio) { |
| 275 | bio_init_from_txn(bio, txn); |
| 276 | bio = 0; |
| 277 | } else { |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 278 | /* todo FREE BUFFER */ |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 279 | } |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 280 | ptr += sizeof(*txn); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 281 | r = 0; |
| 282 | break; |
| 283 | } |
| 284 | case BR_DEAD_BINDER: { |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 285 | struct binder_death *death = (struct binder_death *)(uintptr_t) *(binder_uintptr_t *)ptr; |
| 286 | ptr += sizeof(binder_uintptr_t); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 287 | death->func(bs, death->ptr); |
| 288 | break; |
| 289 | } |
| 290 | case BR_FAILED_REPLY: |
| 291 | r = -1; |
| 292 | break; |
| 293 | case BR_DEAD_REPLY: |
| 294 | r = -1; |
| 295 | break; |
| 296 | default: |
| 297 | ALOGE("parse: OOPS %d\n", cmd); |
| 298 | return -1; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | return r; |
| 303 | } |
| 304 | |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 305 | void binder_acquire(struct binder_state *bs, uint32_t target) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 306 | { |
| 307 | uint32_t cmd[2]; |
| 308 | cmd[0] = BC_ACQUIRE; |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 309 | cmd[1] = target; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 310 | binder_write(bs, cmd, sizeof(cmd)); |
| 311 | } |
| 312 | |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 313 | void binder_release(struct binder_state *bs, uint32_t target) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 314 | { |
| 315 | uint32_t cmd[2]; |
| 316 | cmd[0] = BC_RELEASE; |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 317 | cmd[1] = target; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 318 | binder_write(bs, cmd, sizeof(cmd)); |
| 319 | } |
| 320 | |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 321 | void binder_link_to_death(struct binder_state *bs, uint32_t target, struct binder_death *death) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 322 | { |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 323 | struct { |
| 324 | uint32_t cmd; |
| 325 | struct binder_handle_cookie payload; |
| 326 | } __attribute__((packed)) data; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 327 | |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 328 | data.cmd = BC_REQUEST_DEATH_NOTIFICATION; |
| 329 | data.payload.handle = target; |
| 330 | data.payload.cookie = (uintptr_t) death; |
| 331 | binder_write(bs, &data, sizeof(data)); |
| 332 | } |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 333 | |
| 334 | int binder_call(struct binder_state *bs, |
| 335 | struct binder_io *msg, struct binder_io *reply, |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 336 | uint32_t target, uint32_t code) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 337 | { |
| 338 | int res; |
| 339 | struct binder_write_read bwr; |
| 340 | struct { |
| 341 | uint32_t cmd; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 342 | struct binder_transaction_data txn; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 343 | } __attribute__((packed)) writebuf; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 344 | unsigned readbuf[32]; |
| 345 | |
| 346 | if (msg->flags & BIO_F_OVERFLOW) { |
| 347 | fprintf(stderr,"binder: txn buffer overflow\n"); |
| 348 | goto fail; |
| 349 | } |
| 350 | |
| 351 | writebuf.cmd = BC_TRANSACTION; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 352 | writebuf.txn.target.handle = target; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 353 | writebuf.txn.code = code; |
| 354 | writebuf.txn.flags = 0; |
| 355 | writebuf.txn.data_size = msg->data - msg->data0; |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 356 | writebuf.txn.offsets_size = ((char*) msg->offs) - ((char*) msg->offs0); |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 357 | writebuf.txn.data.ptr.buffer = (uintptr_t)msg->data0; |
| 358 | writebuf.txn.data.ptr.offsets = (uintptr_t)msg->offs0; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 359 | |
| 360 | bwr.write_size = sizeof(writebuf); |
| 361 | bwr.write_consumed = 0; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 362 | bwr.write_buffer = (uintptr_t) &writebuf; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 363 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 364 | hexdump(msg->data0, msg->data - msg->data0); |
| 365 | for (;;) { |
| 366 | bwr.read_size = sizeof(readbuf); |
| 367 | bwr.read_consumed = 0; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 368 | bwr.read_buffer = (uintptr_t) readbuf; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 369 | |
| 370 | res = ioctl(bs->fd, BINDER_WRITE_READ, &bwr); |
| 371 | |
| 372 | if (res < 0) { |
| 373 | fprintf(stderr,"binder: ioctl failed (%s)\n", strerror(errno)); |
| 374 | goto fail; |
| 375 | } |
| 376 | |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 377 | res = binder_parse(bs, reply, (uintptr_t) readbuf, bwr.read_consumed, 0); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 378 | if (res == 0) return 0; |
| 379 | if (res < 0) goto fail; |
| 380 | } |
| 381 | |
| 382 | fail: |
| 383 | memset(reply, 0, sizeof(*reply)); |
| 384 | reply->flags |= BIO_F_IOERROR; |
| 385 | return -1; |
| 386 | } |
| 387 | |
| 388 | void binder_loop(struct binder_state *bs, binder_handler func) |
| 389 | { |
| 390 | int res; |
| 391 | struct binder_write_read bwr; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 392 | uint32_t readbuf[32]; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 393 | |
| 394 | bwr.write_size = 0; |
| 395 | bwr.write_consumed = 0; |
| 396 | bwr.write_buffer = 0; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 397 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 398 | readbuf[0] = BC_ENTER_LOOPER; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 399 | binder_write(bs, readbuf, sizeof(uint32_t)); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 400 | |
| 401 | for (;;) { |
| 402 | bwr.read_size = sizeof(readbuf); |
| 403 | bwr.read_consumed = 0; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 404 | bwr.read_buffer = (uintptr_t) readbuf; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 405 | |
| 406 | res = ioctl(bs->fd, BINDER_WRITE_READ, &bwr); |
| 407 | |
| 408 | if (res < 0) { |
| 409 | ALOGE("binder_loop: ioctl failed (%s)\n", strerror(errno)); |
| 410 | break; |
| 411 | } |
| 412 | |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 413 | res = binder_parse(bs, 0, (uintptr_t) readbuf, bwr.read_consumed, func); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 414 | if (res == 0) { |
| 415 | ALOGE("binder_loop: unexpected reply?!\n"); |
| 416 | break; |
| 417 | } |
| 418 | if (res < 0) { |
| 419 | ALOGE("binder_loop: io error %d %s\n", res, strerror(errno)); |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | } |
| 424 | |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 425 | void bio_init_from_txn(struct binder_io *bio, struct binder_transaction_data *txn) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 426 | { |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 427 | bio->data = bio->data0 = (char *)(intptr_t)txn->data.ptr.buffer; |
| 428 | bio->offs = bio->offs0 = (binder_size_t *)(intptr_t)txn->data.ptr.offsets; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 429 | bio->data_avail = txn->data_size; |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 430 | bio->offs_avail = txn->offsets_size / sizeof(size_t); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 431 | bio->flags = BIO_F_SHARED; |
| 432 | } |
| 433 | |
| 434 | void bio_init(struct binder_io *bio, void *data, |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 435 | size_t maxdata, size_t maxoffs) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 436 | { |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 437 | size_t n = maxoffs * sizeof(size_t); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 438 | |
| 439 | if (n > maxdata) { |
| 440 | bio->flags = BIO_F_OVERFLOW; |
| 441 | bio->data_avail = 0; |
| 442 | bio->offs_avail = 0; |
| 443 | return; |
| 444 | } |
| 445 | |
| 446 | bio->data = bio->data0 = (char *) data + n; |
| 447 | bio->offs = bio->offs0 = data; |
| 448 | bio->data_avail = maxdata - n; |
| 449 | bio->offs_avail = maxoffs; |
| 450 | bio->flags = 0; |
| 451 | } |
| 452 | |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 453 | static void *bio_alloc(struct binder_io *bio, size_t size) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 454 | { |
| 455 | size = (size + 3) & (~3); |
| 456 | if (size > bio->data_avail) { |
| 457 | bio->flags |= BIO_F_OVERFLOW; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 458 | return NULL; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 459 | } else { |
| 460 | void *ptr = bio->data; |
| 461 | bio->data += size; |
| 462 | bio->data_avail -= size; |
| 463 | return ptr; |
| 464 | } |
| 465 | } |
| 466 | |
| 467 | void binder_done(struct binder_state *bs, |
Ian Pedowitz | d57d9b9 | 2016-02-19 08:34:43 +0000 | [diff] [blame] | 468 | __unused struct binder_io *msg, |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 469 | struct binder_io *reply) |
| 470 | { |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 471 | struct { |
| 472 | uint32_t cmd; |
| 473 | uintptr_t buffer; |
| 474 | } __attribute__((packed)) data; |
| 475 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 476 | if (reply->flags & BIO_F_SHARED) { |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 477 | data.cmd = BC_FREE_BUFFER; |
| 478 | data.buffer = (uintptr_t) reply->data0; |
| 479 | binder_write(bs, &data, sizeof(data)); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 480 | reply->flags = 0; |
| 481 | } |
| 482 | } |
| 483 | |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 484 | static struct flat_binder_object *bio_alloc_obj(struct binder_io *bio) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 485 | { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 486 | struct flat_binder_object *obj; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 487 | |
| 488 | obj = bio_alloc(bio, sizeof(*obj)); |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 489 | |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 490 | if (obj && bio->offs_avail) { |
| 491 | bio->offs_avail--; |
| 492 | *bio->offs++ = ((char*) obj) - ((char*) bio->data0); |
| 493 | return obj; |
| 494 | } |
| 495 | |
| 496 | bio->flags |= BIO_F_OVERFLOW; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 497 | return NULL; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | void bio_put_uint32(struct binder_io *bio, uint32_t n) |
| 501 | { |
| 502 | uint32_t *ptr = bio_alloc(bio, sizeof(n)); |
| 503 | if (ptr) |
| 504 | *ptr = n; |
| 505 | } |
| 506 | |
| 507 | void bio_put_obj(struct binder_io *bio, void *ptr) |
| 508 | { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 509 | struct flat_binder_object *obj; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 510 | |
| 511 | obj = bio_alloc_obj(bio); |
| 512 | if (!obj) |
| 513 | return; |
| 514 | |
| 515 | obj->flags = 0x7f | FLAT_BINDER_FLAG_ACCEPTS_FDS; |
| 516 | obj->type = BINDER_TYPE_BINDER; |
Arve Hjønnevåg | 399b6c3 | 2014-01-28 21:25:12 -0800 | [diff] [blame] | 517 | obj->binder = (uintptr_t)ptr; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 518 | obj->cookie = 0; |
| 519 | } |
| 520 | |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 521 | void bio_put_ref(struct binder_io *bio, uint32_t handle) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 522 | { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 523 | struct flat_binder_object *obj; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 524 | |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 525 | if (handle) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 526 | obj = bio_alloc_obj(bio); |
| 527 | else |
| 528 | obj = bio_alloc(bio, sizeof(*obj)); |
| 529 | |
| 530 | if (!obj) |
| 531 | return; |
| 532 | |
| 533 | obj->flags = 0x7f | FLAT_BINDER_FLAG_ACCEPTS_FDS; |
| 534 | obj->type = BINDER_TYPE_HANDLE; |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 535 | obj->handle = handle; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 536 | obj->cookie = 0; |
| 537 | } |
| 538 | |
| 539 | void bio_put_string16(struct binder_io *bio, const uint16_t *str) |
| 540 | { |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 541 | size_t len; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 542 | uint16_t *ptr; |
| 543 | |
| 544 | if (!str) { |
| 545 | bio_put_uint32(bio, 0xffffffff); |
| 546 | return; |
| 547 | } |
| 548 | |
| 549 | len = 0; |
| 550 | while (str[len]) len++; |
| 551 | |
| 552 | if (len >= (MAX_BIO_SIZE / sizeof(uint16_t))) { |
| 553 | bio_put_uint32(bio, 0xffffffff); |
| 554 | return; |
| 555 | } |
| 556 | |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 557 | /* Note: The payload will carry 32bit size instead of size_t */ |
| 558 | bio_put_uint32(bio, (uint32_t) len); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 559 | len = (len + 1) * sizeof(uint16_t); |
| 560 | ptr = bio_alloc(bio, len); |
| 561 | if (ptr) |
| 562 | memcpy(ptr, str, len); |
| 563 | } |
| 564 | |
| 565 | void bio_put_string16_x(struct binder_io *bio, const char *_str) |
| 566 | { |
| 567 | unsigned char *str = (unsigned char*) _str; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 568 | size_t len; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 569 | uint16_t *ptr; |
| 570 | |
| 571 | if (!str) { |
| 572 | bio_put_uint32(bio, 0xffffffff); |
| 573 | return; |
| 574 | } |
| 575 | |
| 576 | len = strlen(_str); |
| 577 | |
| 578 | if (len >= (MAX_BIO_SIZE / sizeof(uint16_t))) { |
| 579 | bio_put_uint32(bio, 0xffffffff); |
| 580 | return; |
| 581 | } |
| 582 | |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 583 | /* Note: The payload will carry 32bit size instead of size_t */ |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 584 | bio_put_uint32(bio, len); |
| 585 | ptr = bio_alloc(bio, (len + 1) * sizeof(uint16_t)); |
| 586 | if (!ptr) |
| 587 | return; |
| 588 | |
| 589 | while (*str) |
| 590 | *ptr++ = *str++; |
| 591 | *ptr++ = 0; |
| 592 | } |
| 593 | |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 594 | static void *bio_get(struct binder_io *bio, size_t size) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 595 | { |
| 596 | size = (size + 3) & (~3); |
| 597 | |
| 598 | if (bio->data_avail < size){ |
| 599 | bio->data_avail = 0; |
| 600 | bio->flags |= BIO_F_OVERFLOW; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 601 | return NULL; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 602 | } else { |
| 603 | void *ptr = bio->data; |
| 604 | bio->data += size; |
| 605 | bio->data_avail -= size; |
| 606 | return ptr; |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | uint32_t bio_get_uint32(struct binder_io *bio) |
| 611 | { |
| 612 | uint32_t *ptr = bio_get(bio, sizeof(*ptr)); |
| 613 | return ptr ? *ptr : 0; |
| 614 | } |
| 615 | |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 616 | uint16_t *bio_get_string16(struct binder_io *bio, size_t *sz) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 617 | { |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 618 | size_t len; |
| 619 | |
| 620 | /* Note: The payload will carry 32bit size instead of size_t */ |
| 621 | len = (size_t) bio_get_uint32(bio); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 622 | if (sz) |
| 623 | *sz = len; |
| 624 | return bio_get(bio, (len + 1) * sizeof(uint16_t)); |
| 625 | } |
| 626 | |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 627 | static struct flat_binder_object *_bio_get_obj(struct binder_io *bio) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 628 | { |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 629 | size_t n; |
| 630 | size_t off = bio->data - bio->data0; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 631 | |
Serban Constantinescu | 3a345f0 | 2013-12-19 09:11:41 +0000 | [diff] [blame] | 632 | /* TODO: be smarter about this? */ |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 633 | for (n = 0; n < bio->offs_avail; n++) { |
| 634 | if (bio->offs[n] == off) |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 635 | return bio_get(bio, sizeof(struct flat_binder_object)); |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 636 | } |
| 637 | |
| 638 | bio->data_avail = 0; |
| 639 | bio->flags |= BIO_F_OVERFLOW; |
Serban Constantinescu | 9b738bb | 2014-01-10 15:48:29 +0000 | [diff] [blame] | 640 | return NULL; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 641 | } |
| 642 | |
Serban Constantinescu | 5fb1b88 | 2014-01-30 14:07:34 +0000 | [diff] [blame] | 643 | uint32_t bio_get_ref(struct binder_io *bio) |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 644 | { |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 645 | struct flat_binder_object *obj; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 646 | |
| 647 | obj = _bio_get_obj(bio); |
| 648 | if (!obj) |
| 649 | return 0; |
| 650 | |
| 651 | if (obj->type == BINDER_TYPE_HANDLE) |
Serban Constantinescu | bcf3888 | 2014-01-10 13:56:27 +0000 | [diff] [blame] | 652 | return obj->handle; |
Mike Lockwood | 94afecf | 2012-10-24 10:45:23 -0700 | [diff] [blame] | 653 | |
| 654 | return 0; |
| 655 | } |